OK, I got a lot of things to talk about, about this chapter, especially because it is the start of a new arc of the Negima plot. (Thank goodness.)
First off it seems that normalcy has returned to both worlds for now, as we are back to the usual school life of Mahora, it being really obvious from the almost repeated scene that parallels the beginning of the whole manga (page 7 of chapter 336).
Biggest shock was that Fate is now temporary teacher of class 3-A. I mean that was totally unexpected, mind blowing for me. I liked how Ala Alba sprung into battle mode right in class (I don't think Chachamaru is thinking properly, because her weapon will destroy the school and most likely kill normal people). This brings up the question, after the events of the magic world connection with Mahora academy, does humans at least in the Mahora area know about magic? No one questioned how the Ala Alba members transformed so suddenly into their Pactio abilities.
It was explained that the reason that Fate was taking over class 3-A is because Negi was busy with work overseas, to deal with the impending situation of the Magic World collapsing. Negi's plan has not been reveled, but it seems that Ayaka and Chizuru are involved in helping Negi (as he had mentioned it before that he needed her help).
At the end of the chapter, we have the usual love talk with the girls. Standard stuff, but when Fate joins in the talk, it seems he has a thing for him as well, probably not love though, probably like rivals or something similar like Kotaro. When Fate mentions in page 16 of the chapter about how the girls would not understand Negi's destiny, and that one who has seen the things Negi has seen would, I had already predicted that Fate would say something along the lines that he is someone who is close to Negi, and indeed that is what he said in the next page. I'm hoping that no Negi x Fate relationship is created than just working together to save the magic world. To me this sort of downgrades Fate's character almost to that of just one of Negi's minor students. I probably think that this is Akamatsu's way of bringing the human side to Fate's personality, but it feels like such a drastic contradiction to how he was presented before. Still, even though the last few chapters have been rushed and quality of the manga itself is decreasing, I'm still interested in how this will all truly end in the true final chapters of Negima, whenever that may be.